tracking down source/cause of garbage packets
From: jonathan (ttyp32000_at_yahoo.com)
Date: 10/09/03
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Date: 9 Oct 2003 12:40:11 -0700
hey all,
Our network has been having difficulties; and using iris (a windows
tool) we are seeing tons of packets that:
a) don't have a valid mac address
b) don't have valid IP addresses on either the sending or receiving
end.
c) that have frames of either '---' (not valid) or 802.3
d) that have either the 'spanning tree' or 'SNAP' or '---' protocol
ie, they are basically dummies that are clogging our network. Any clue
on what
might be causing this? Can a program (virus, etc) spoof mac addresses
as
well as IP? How would people go about tracking them down?
Thanks much,
jon
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